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PARASITIC BUNCH MEASUREMENT IN e+/e- STORAGE RINGS

H. Franz, M. Seebach, A. Ehnes, Matthias Werner, Deutsches Elektronen-Synchrotron Desy

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Abstract

The lepton storage rings DORIS and PETRA at DESY are used as sources for synchrotron radiation experiments. In normal operation the distance between bunches should be 96 ns in PETRA and in DORIS. The adjacent buckets must not have any stored particles or, in reality, as few as possible. This is particularly important for time-triggered photon measuring experiments. The principle of the 'parasitic bunch' measurement down to a fraction of 10 -6 of the main bunch within 20 seconds is described. Additionally, the sources of the 'parasitic bunches' and the actions to minimize them are discussed.

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What this paper is about

The lepton storage rings DORIS and PETRA at DESY are used as sources for synchrotron radiation experiments. In normal operation the distance between bunches should be 96 ns in PETRA and in DORIS. The adjacent buckets must not have any stored particles or, in reality, as few as possible. This is particularly important for time-triggered photon measuring experiments. The principle of the 'parasitic bunch' measurement down to a fraction of 10 -6 of the main bunch within 20 seconds is described. Additionally, the sources of the 'parasitic bunches' and the actions to minimize them are discussed.

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Available abstract

The lepton storage rings DORIS and PETRA at DESY are used as sources for synchrotron radiation experiments. In normal operation the distance between bunches should be 96 ns in PETRA and in DORIS. The adjacent buckets must not have any stored particles or, in reality, as few as possible. This is particularly important for time-triggered photon measuring experiments. The principle of the 'parasitic bunch' measurement down to a fraction of 10 -6 of the main bunch within 20 seconds is described. Additionally, the sources of the 'parasitic bunches' and the actions to minimize them are discussed.

Key concepts: DESY, Bunches, Storage ring, Physics, Doris (gastropod), Synchrotron radiation, Optics, Nuclear physics

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